Enhancement of Visible-Light Photocatalysis by Coupling with Narrow-Band-Gap Semiconductor: A Case Study on Bi2S3/Bi2WO6

被引：423
作者：
Zhang, Zhijie [1 ]
Wang, Wenzhong [1 ]
Wang, Lu [1 ]
Sun, Songmei [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
来源：
ACS APPLIED MATERIALS & INTERFACES | 2012年 / 4卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Bi2S3/Bi2WO6; composite; photocatalysis; heterojunction; phenol; DEGRADATION; BI2WO6; HYDROGEN; TIO2; ABSORPTION; SULFIDE; AGENT; CDS;
D O I：
10.1021/am2017199
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
To overcome the drawback of low photocatalytic efficiency brought by electron hole recombination and narrow photoresponse range, we designed a novel Bi2S3/Bi2WO6 composite photocatalyst. The composite possesses a wide photoabsorption until 800 nm, which occupies nearly the whole range, of the visible light Compared with bare Bi2WO6, the Bi2S3/Bi2WO6 composite exhibits significantly enhanced photocatalytic activity for phenol degradation Under visible light irradiation. On the basis of the calculated energy band positions, the mechanism of enhanced photocatalytic activity was proposed. The present study provides a new strategy to design composite materials with enhanced photocatalytic performance.
引用
收藏
页码：593 / 597
页数：5
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